Skymark — ORC Rating | RegattaPages

GPH

690.7

OSN

668.6

LOA

10.491 m

Displacement

5078 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6039

Medium

0.8089

High

0.9229

Triple Offshore

Low

0.7656

Medium

0.9783

High

1.0786

Boat Specifications

Dimensions

Length overall: 10.491 m
Beam: 3.08 m
Draft: 2.54 m
Displacement: 5078 kg
Crew weight: 462 kg
Wetted surface: 22.5 m²

Sails

Mainsail: 22.57 m²
Genoa: 38.9 m²
Spinnaker: 80.15 m²
Asymmetric spinnaker: 0 m²

Design

Type: TARTAN 34C
Builder: Tartan Yachts
Designer: OLIN STEPHENS
Year built: 1967

Velocity Prediction

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into WX Navigator or compatible navigation software.

6,41,4.359293,52,4.87,60,5.06,75,5.17,90,5.05,110,5.04,120,4.89,135,4.45,146.6,3.940838,150,3.8
8,39.2,5.045523,52,5.65,60,5.83,75,5.94,90,5.87,110,6.01,120,5.9,135,5.46,150,4.8,150.7,4.770263
10,38.3,5.54298,52,6.14,60,6.28,75,6.38,90,6.38,110,6.56,120,6.5,135,6.23,150,5.66,152.5,5.535445
12,37.2,5.787604,52,6.39,60,6.52,75,6.64,90,6.66,110,6.88,120,6.87,135,6.67,150,6.29,159.2,5.95833
14,36.7,5.874461,52,6.49,60,6.64,75,6.81,90,6.88,110,7.1,120,7.16,135,7.01,150,6.69,171.8,6.163009
16,36.5,5.933892,52,6.54,60,6.68,75,6.9,90,7.05,110,7.24,120,7.4,135,7.31,150,7,177.7,6.525257
20,36.5,5.958772,52,6.55,60,6.72,75,6.98,90,7.24,110,7.45,120,7.72,135,7.87,150,7.57,178.6,7.112123
24,37.5,5.94943,52,6.54,60,6.72,75,7.02,90,7.33,110,7.49,120,7.96,135,8.43,150,8.12,178.6,7.642281

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.87	5.06	5.17	5.05	5.04	4.89	4.45	3.8
8	5.65	5.83	5.94	5.87	6.01	5.9	5.46	4.8
10	6.14	6.28	6.38	6.38	6.56	6.5	6.23	5.66
12	6.39	6.52	6.64	6.66	6.88	6.87	6.67	6.29
14	6.49	6.64	6.81	6.88	7.1	7.16	7.01	6.69
16	6.54	6.68	6.9	7.05	7.24	7.4	7.31	7
20	6.55	6.72	6.98	7.24	7.45	7.72	7.87	7.57
24	6.54	6.72	7.02	7.33	7.49	7.96	8.43	8.12

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	41°	3.29	146.6°	3.29
8	39.2°	3.91	150.7°	4.16
10	38.3°	4.35	152.5°	4.91
12	37.2°	4.61	159.2°	5.57
14	36.7°	4.71	171.8°	6.1
16	36.5°	4.77	177.7°	6.52
20	36.5°	4.79	178.6°	7.11
24	37.5°	4.72	178.6°	7.64

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